Sometimes Mom's voice still rings in our head as we're walking out the door, "Take a jacket, you'll get cold." These spring days can be so misleading with the warm daytime temperatures dropping in the evening, not to mention those pesky, unpredictable rain showers. With your well-being in mind, Refinery29 has teamed up with Penfield USA, the classic outdoor apparel brand, to give one lucky reader their lightweight and weatherproof Rider jacket. The Rider is diamond quilted with naturally breathable material, a classic jacket that can be worn over any outfit, keeping you stylish while being sensible. Just enter your email address by May 12 to sign up for Refinery29 and Penfield USA newsletters to be entered to win. Check out Penfield's Women's collection for more timeless spring essentials that's equal parts style and function.